Thermoacoustic heat regenerator based on surface acoustic wave generator

Abstract

The invention relates to a novel thermoacoustic heat regenerator capable of improving thermoacoustic heat regenerator heat regenerating and thermoacoustic transition efficiency; the novel thermoacoustic heat regenerator can supplement partial viscosity loss energy in the heat regenerator heat exchange process, and can use oscillations formed by surface acoustic waves to convert nature convection on a stack surface into forced convection, thus enhancing heat exchange capability, and improving efficiency; the thermoacoustic heat regenerator comprises a stacked structure heat regenerator and a surface acoustic wave generator, wherein the stacked structure is formed by combining a pres-stamping forming thin plate with a heat regenerator sleeve; the surface acoustic wave generator is formed by using an electron beam to etch a PZT piezoelectric material; the novel thermoacoustic heat regenerator fully uses the thermoacoustic transition principle, and employs the mature technology, simple structure and low cost features of the stack heat regenerator, thus solving the problems that a conventional heat regenerator is large in viscosity dissipation, not obvious in heat exchange, and poor in efficiency; the novel thermoacoustic heat regenerator has excellent application values.

Description

technical field [0001] The present invention relates to a new type of thermoacoustic regenerator, in particular, it relates to a regenerating and thermoacoustic conversion efficiency, which is convenient for processing, installation and debugging, and can be widely used in thermoacoustic heat engines and cryogenic refrigerators. New thermoacoustic regenerator. Background technique [0002] Thermoacoustic refrigeration technology is a completely new type of refrigeration technology, which is a refrigeration technology that utilizes the thermoacoustic effect. The thermoacoustic effect is the mutual transformation between heat and sound. From an acoustic point of view, it is the interaction between the solid medium in the sound field and the oscillating fluid, which makes the heat flow along (or against) the direction of sound propagation within a certain range from the solid boundary, and generates or The phenomenon of absorbing sound power. According to the direction of en...

AI Technical Summary

Problems solved by technology

[0009] The technical problem to be solved in the present invention is: aiming at the problem of low thermoacoustic conversion efficiency of ordinary plate-stacked regenerators, the surface acoustic wave is applied to the ordinary plate-stacked regenerator, and the surface acoustic wave device is etched on the The surface of the plate stack is designed to be a new type of thermoacoustic regenerator that can improve the thermoacoustic conversion efficiency, expand the application field of the thermoacoustic regenerator, and improve the overall efficiency of the thermoacoustic heat engine and the cryogenic refrigerator.

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